The Research Progress of Chrysanthemum Germplasm on Phenotype and DNA Molecular Markers
Chrysanthemum is a perennial plant of the genus Chrysanthemum in the family of Asteraceae.It is one of the most important ornamental flowers in the world,with medicinal,drinkable and edible value.Chrysan-themum has strong adaptability,grows quickly,easily cultivate,it has been widely introduced and cultivated all over the country.The mixed phenomenon of cultivated species,wild species and related species of chrysanthe-mum is widespread,which hinders the breeding and industrial development of chrysanthemum.This article re-views the research progress of phenotype and DNA molecular markers in chrysanthemum breeding research from the aspects of chrysanthemum germplasm identification and classification,excellent germplasm screening,genet-ic diversity analysis,genetic model analysis,genetic linkage map construction,gene mapping of the target traits.It provides a reference for the effective utilization of germplasm resources and the genetic improvement of chrysanthemum varieties.